/**
*
*  URL encode / decode
*  http://www.webtoolkit.info/
* 注意，使用方法 Url.encode(string) 得到的是UTF-8编码的数据
**/
var Url = {
		// public method for url encoding
		encode : function (string) {
				return escape(this._utf8_encode(string));
		},
		// public method for url decoding
		decode : function (string) {
				return this._utf8_decode(unescape(string));
		},
		// private method for UTF-8 encoding
		_utf8_encode : function (string) {
				string = string.replace(/\r\n/g,"\n");
				var utftext = "";
				for (var n = 0; n < string.length; n++) {
						var c = string.charCodeAt(n);
						if (c < 128) {
								utftext += String.fromCharCode(c);
						}
						else if((c > 127) && (c < 2048)) {
								utftext += String.fromCharCode((c >> 6) | 192);
								utftext += String.fromCharCode((c & 63) | 128);
						}
						else {
								utftext += String.fromCharCode((c >> 12) | 224);
								utftext += String.fromCharCode(((c >> 6) & 63) | 128);
								utftext += String.fromCharCode((c & 63) | 128);
						}
				}
				return utftext;
		},
		// private method for UTF-8 decoding
		_utf8_decode : function (utftext) {
				var string = "";
				var i = 0;
				var c = c1 = c2 = 0;
				while ( i < utftext.length ) {
						c = utftext.charCodeAt(i);
						if (c < 128) {
								string += String.fromCharCode(c);
								i++;
						}
						else if((c > 191) && (c < 224)) {
								c2 = utftext.charCodeAt(i+1);
								string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
								i += 2;
						}
						else {
								c2 = utftext.charCodeAt(i+1);
								c3 = utftext.charCodeAt(i+2);
								string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
								i += 3;
						}
				}
				return string;
		}
}

//判断日期是否合法 
function isDateValid(obj) {
	var regex = new RegExp(
			"^(?:(?:([0-9]{4}(-|\/)(?:(?:0?[1,3-9]|1[0-2])(-|\/)(?:29|30)|((?:0?[13578]|1[02])(-|\/)31)))|([0-9]{4}(-|\/)(?:0?[1-9]|1[0-2])(-|\/)(?:0?[1-9]|1\\d|2[0-8]))|(((?:(\\d\\d(?:0[48]|[2468][048]|[13579][26]))|(?:0[48]00|[2468][048]00|[13579][26]00))(-|\/)0?2(-|\/)29))))$");
	var dateValue = obj.value;
	if (!regex.test(dateValue)) {
		alert("日期有误！请选择正确的日期格式,如：(2012-02-01)");
		dateValue = "";
		obj.focus();
		return false;
	}
	return true;
}

function closeMsgBox() {
	var msg = document.getElementById("msg");
	msg.parentNode.removeChild(msg);
}